During January 2007, the construction work on one of the water distribution mains for the Segarra-Garrigues system led to the unexpected appearance of archaeological ruins from an ancient construction, dating from 4,800 years ago, in Seró (Artesa de Segre, Lleida). The most exceptional feature of this discovery was the megalithic nature of the sandstone slabs and, particularly the precision of the geometrical decorations carved on them. These stones, carved in soft relief, were in fact fragments of ancient statues from a former sculptural monument that had been reused.